Difficulties rendering glass

kidd_milan — Fri, 29 Aug 2025 04:49:32 GMT

The design (attached) is a tube bird feeder. The glass tube is hollow and the appearance is a slightly modified glass: RGB of 255,255,255; roughness=0. The renders consistently show little light passing through the tube. I dropped the thickness from 3mm to 0.5mm, changed the absorption distance by orders of magnitude, all with little discernible difference. See first image, below.

On this post the solution by @TrippyLighting mentioned a "semicircular emitter background," which I interpreted (incorrectly?) as an emissive body behind my model. So I created one that filled the entire render window, changing the settings of an LED emissive appearance: RGB of 255,255,255; luminance of 200 cd/m^2; roughness=0. The glass looks more transparent (2nd image below), but now the background is grey. And rendering as a turntable means the emissive body blocks the view half the time.

The goal is to get closer to the Solidworks Visualize render below (I don't have the Professional version, which is required for a turntable animation), but with a white background and turntable-able. Any suggestions?

Many thanks!

Without emissiveWith emissiveSolidworks Visualize for comparison

Re: Difficulties rendering glass

TrippyLighting — Sun, 31 Aug 2025 13:45:34 GMT

With a semi-circular structure, I mean a tube-like shape surrounding the object, not a flat circle positioned behind the object.

A glass object needs something to refract or reflect to make it visible.

Turntable renders are incredibly limited in Fusion. I'd do that in Blender!

topic Difficulties rendering glass in Fusion Design, Validate & Document Forum

Difficulties rendering glass

Re: Difficulties rendering glass